GB/T 21975-2008Method of test for reliability of three-phase induction motors for crane and metallurgical application (English PDF)

1 Scope

This standard specifies the crane and metallurgical three-phase asynchronous motor reliability of laboratory test methods, test data processing and reliability assessment.

This standard applies to crane and metallurgical three-phase asynchronous motor (hereinafter referred to as a motor) reliability, reliable life, average life evaluation.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB 755-2000 rotating motor fixed and performance (idt IEC 60034-1.1996)

GB/T 2423.3-1993 electric and electronic products environmental testing procedures Test Ca. Damp heat test method (eqv IEC 60068-2-

3. 1984)

GB 10068-2000 shaft heights mechanical vibration measurement of 56mm and above the motor, evaluation and limits (Idt IEC 60034-14.1996)

Room Windings insulation test method JB/T 9615.1-2000 AC low-voltage motors fitted scattered

JB/T 9615.2-2000 AC low-voltage motors embedded scattered among Windings insulation test limits

JB/T 10104-1999 YZ series crane and metallurgical three-phase induction motor

JB/T 10105-1999 YZR series crane and metallurgical three-phase induction motors with wound rotor

3 Terms, definitions and symbols

The following terms, definitions and symbols apply to this standard.